diff --git a/dist/hap-sign-tool.jar b/dist/hap-sign-tool.jar
index 0ad7e6eda0ae8865de1f7c644d7b9bb1532b585c..c0e24c5f5ff39350e7629e08702b305dc55d83e0 100644
Binary files a/dist/hap-sign-tool.jar and b/dist/hap-sign-tool.jar differ
diff --git a/hapsigntool/hap_sign_tool_lib/src/main/java/com/ohos/hapsigntool/hap/provider/SignProvider.java b/hapsigntool/hap_sign_tool_lib/src/main/java/com/ohos/hapsigntool/hap/provider/SignProvider.java
index 92b9879ac45c6e4f591e8a83fc441ee32b62276a..e5da2793d25edba4ad9865b44d7f2785c1a6523c 100644
--- a/hapsigntool/hap_sign_tool_lib/src/main/java/com/ohos/hapsigntool/hap/provider/SignProvider.java
+++ b/hapsigntool/hap_sign_tool_lib/src/main/java/com/ohos/hapsigntool/hap/provider/SignProvider.java
@@ -462,7 +462,11 @@ public abstract class SignProvider {
         String[] arrayDN = valueOfDN.split(",");
         for (String element : arrayDN) {
             if (element.trim().startsWith("CN=")) {
-                return element.split("=")[1];
+                String[] tempArray = element.split("=");
+                if (tempArray.length == 2) {
+                    return tempArray[1];
+                }
+                return "";
             }
         }
         return "";